Methanol → Z-Trp-ome

HRID 1500156

Reaktionsgleichung

Reaktionsgleichung von HRID 1500156
[CH2:1]([O:8][C:9]([NH:11][C@H:12]([C:23]([OH:25])=[O:24])[CH2:13][C:14]1[C:22]2[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=2)[NH:16][CH:15]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CO.[CH2:28]1CCC(N=C=NC2CCCCC2)CC1>C(Cl)Cl.CN(C1C=CN=CC=1)C>[CH3:28][O:24][C:23](=[O:25])[C@H:12]([CH2:13][C:14]1[C:22]2[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=2)[NH:16][CH:15]=1)[NH:11][C:9]([O:8][CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)=[O:10]

Komponenten

6

Edukt 3

HCID 887MethanolHCID 10868DicyclohexylcarbodiimideHCID 101176benzyloxycarbonyl-L-tryptophan

Produkt 1

HCID 11256670Z-Trp-ome

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 142844-(Dimethylamino)pyridineKatalysatorHCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a stirred suspension of (S)—N-benzyloxycarbonyl-L-tryptophan 1a (2.45 g, 7.2 mmol) in 10 ml anhydrous CH2Cl2, was added DMAP (0.1 g, 0.82 mmol) and methanol (0.28 g, 11.8 mmol). At 0° C., DCC in CH2Cl2 solution was slowly added to the mixture and then it was allowed to warm to room temperature and stirred overnight. After twice filtration and evaporation, the residue was purified by flash column chromatography (n-hexane/EA, 4:1 to 2:1) and afforded the desired product (S)-2a as a colourless oil (2.5 g, 98%).

Aufarbeitung

  1. filtrationAfter twice filtration and evaporation
  2. customthe residue was purified by flash column chromatography (n-hexane/EA, 4:1 to 2:1)

Quellen und Nachweise

ORD-Eintrag
ord-9c66da0efff34c8aba0596e2e03199c5
Quelldatensatz
uspto-grants-2015_12
Patentnummer
US09206090B2

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